<nettime> OCLC web stats

[t byfield <tbyfield@panix.com>]

<http://www.oclc.org/oclc/research/projects/webstats/statistics.htm>

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June 1999 Web Statistics

   Note: Confidence intervals are reported at the 95% level
   
   View a brief explanation of the statistics.
   Number of IP addresses in 32-bit address space: 4,294,967,296
   Number of IP addresses in the 0.1% random sample: 4,294,967
     _________________________________________________________________
   
   Web Size
   Number of Web Sites: 4,882,000
   (+/- 3%)
   Number of Unique Web Sites: 3,649,000
   (+/- 3%)
     _________________________________________________________________
   
   Web Site Categorization (Unique Sites)
   Number of Public Web Sites: 2,229,000
   (+/- 4%)
   Number of Private Web Sites: 389,000
   (+/- 10%)
   Number of Provisional Web Sites: 1,031,000
   (+/- 6%)
     _________________________________________________________________
   
   Public Web Sites (Unique Only)
   Number of Web Pages: 288,221,000
   (+/- 35%)
   Number of Files:
   
                                                              500,491,000
                                                                         
   Number of Adult Sites:
   
                                                                   42,000
                                                                (+/- 30%)
     _________________________________________________________________
   
   Web Growth 
   1997 1998 1999
   Web Sites: 1,570,000 2,851,000 4,882,000
   Unique Sites: 1,230,000 2,035,000 3,649,000
   Unique Public Sites:
   
                                                                  800,000
                                                                         
                                                                1,457,000
                                                                         
                                                                2,229,000
                                                                         
   % Change:
   
                                                               '97 to '98
                                                                         
                                                               '98 to '99
                                                                         
                                                               '97 to '99
                                                                         
      Web Sites:
   
                                                                       82
                                                                         
                                                                       71
                                                                         
                                                                      211
                                                                         
      Unique Sites:
   
                                                                       65
                                                                         
                                                                       79
                                                                         
                                                                      197
                                                                         
      Unique Public Sites:
   
                                                                       82
                                                                         
                                                                       53
                                                                         
                                                                      179
     _________________________________________________________________
   
   Web Volatility
   IP addresses identifying a Web site in 1998 that no longer identify a
   Web site in 1999:
   
                                                                     44 %
     _________________________________________________________________
   
   The statistics and results presented on this site are part of an
   ongoing research effort. They may be revised or updated at any time.
   
   © Copyright 1999 OCLC Online Computer Library Center, Inc. 6565 Frantz
   Rd. Dublin, Ohio 43017-3395 USA
   
                     Last Updated on September 9, 1999

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